公开(公告)号：US5520748A

公开(公告)日：1996-05-28

申请号：US397180

申请日：1995-03-09

申请人： Choong J. Yang ,  Seung D. Choi ,  Woo Y. Lee ,  Young G. Son

发明人： Choong J. Yang ,  Seung D. Choi ,  Woo Y. Lee ,  Young G. Son

IPC分类号： B22F9/10 ,  C22C33/02 ,  C22C38/00 ,  C22C38/16 ,  H01F1/08 ,  H01F41/02 ,  H01F1/03

CPC分类号： C22C33/0292 ,  H01F1/086

摘要： A process for manufacturing an Alnico system permanent magnet is disclosed in which the alloy powder of the Alnico system having the proper composition is manufactured through a rapid solidification process, so that the crushability and the formability should be superior, the sintered density should be high, and the magnetic properties should be excellent, as well as cheap in its manufacturing cost and simple in its manufacturing process. An alloy of Alnico system is subjected to a rapid solidification with a spinning solidifier wheel speed of 6-40 m/sec, thereby manufacturing a microcrystalline rapidly solidified powder. The powder is ground into a finer powder, and then a press-forming is carried out. Then a sintering is carried out at a temperature of 1100.degree.-1350.degree. C. for 0.5-4 hours. Then based on a single heat treatment, an external magnetizing force of 1-15 kOe is applied in a temperature range of 600.degree.-1000.degree. C., thereby carrying out a heat treatment under a magnetizing force. Thereafter, an aging heat treatment is carried out at a temperature of 500.degree.-700.degree. C. for 1-10 hours, thereby magnetizing the formed body.

摘要翻译： 公开了一种制造Alnico系永磁体的方法，其中通过快速固化方法制造具有适当成分的Alnico系统的合金粉末，使得可压碎性和成形性应优于烧结密度， 磁性能优异，制造成本低，制造工艺简单。 AlNico系统的合金以6-40m / sec的纺丝凝固轮速度进行快速凝固，从而制造微晶快速凝固的粉末。 将粉末研磨成更细的粉末，然后进行压制成型。 然后在1100〜-1350℃的温度下进行烧结0.5-4小时。 然后基于单次热处理，在600℃-1000℃的温度范围内施加1-15kOe的外部磁化力，从而在磁化力下进行热处理。 此后，在500〜700℃的温度下进行时效热处理1-10小时，从而使成形体磁化。